Lens Details
mm
Understanding Crop Factor and Focal Length
The crop factor (or focal length multiplier) describes how much smaller a camera's sensor is compared to a 35mm full frame sensor. A lens on a crop sensor camera captures a narrower field of view than the same lens on a full frame camera.
Full frame equivalent = actual focal length × crop factor
Common Crop Factor References
- Full Frame (1.0×): 50mm = "normal" field of view (~47° diagonal)
- APS-C 1.5× (Nikon/Sony/Fuji): 35mm acts like 52.5mm (normal) on full frame
- APS-C 1.6× (Canon): 35mm acts like 56mm on full frame
- Micro Four Thirds 2×: 25mm acts like 50mm (normal) on full frame
- Medium Format 0.64×: 110mm acts like 70mm on full frame
Note: Crop factor affects field of view, but NOT the actual depth of field of the lens. The equivalent aperture shown accounts for the depth of field difference between sensor sizes.